In water, these molecules spontaneously align â with their heads facing outward and their tails lining up in the bilayer's interior. Thus, the hydrophilic heads of the glycerophospholipids in a cell's plasma membrane face both the water-based cytoplasm and the exterior of the cell.
An MRI (magnetic resonance imaging) scan is an imaging test that uses powerful magnets and radio waves to create pictures of the body. It does not use radiation (x-rays). Single MRI images are called slices. The images can be stored on a computer or printed on film.
The MRI scan is an imaging test that allows physicians to assess a patientâs spinal anatomy and investigate an anatomical cause of the patientâs back pain. The physician will correlate the findings on the MRI scan with the patientâs signs and symptoms of back pain in order to arrive at a clinical diagnosis.